Originally Posted by Dacia
I use pure household ammonia (the clear kind with no additives) to cycle my tanks. Just add some to your water to cause the ammonia spike. Within a couple of days you will have a nitrite spike, and soon after that the cycle is complete. I have cycled all my tanks this way, both SW and FW including reef, and it has taken less than 2 weeks each time without harming any fish or stinking up your tank with a shrimp. All the above methods work, however, I am against subjecting live fish of any kind to a cycle. It is like pumping toxic waste into our own lungs. I also have had much faster results with bottled ammonia than with the shrimp. The shrimp decaying may take a week to produce the ammonia that I would have dumped into the tank on day 1...
Just my 2 cents.
You forgot to mention that the "Cow" method recommends ammonia be added every day to properly maintain the cycle. Otherwise, by the time you plop in your fish, the majority of the ammonia consuming bacteria have died off and your actually cycling your tank with live fish.